آخرین محصولات
High-efficiency one-step microwave method for high …
These results demonstrate that employing a crucible capable of absorbing microwave energy in the microwave-assisted one-step physical–chemical coupled …
Adsorption of naphthalene from aqueous …
To remove polycyclic aromatic hydrocarbons effectively, coal-based activated carbon (CAC) was produced by various microwave power modification.
One-step preparation of environment-oriented magnetic coal-based
In this work, we report the preparation of magnetic coal-based activated carbon (MCAC) with high adsorption performance, with Ningxia coking coal and ferrocene as the raw materials. Coal-based carbon was directly activated with KOH at 1000 °C, whereas metal particles were attached its surface through an in-situ process. As a …
Microwave assisted preparation of activated carbon from …
Section snippets Conventional methods for activated carbon preparation. Carbon materials with low oxygen content, basic properties, highly hydrophobic characteristics and resistance to aging can be obtained by appropriate thermal treatments in different gaseous environments [40], [41], [42], which is usually achieved by convective, …
Microwave catalytic pyrolysis of biomass: a review focusing …
The quest for low-carbon alternatives to fossil fuels and the carbon emissions associated with the natural degradation of biomass have accelerated the development of biomass processing technologies.
Preparation and characterization of activated carbon from …
In this study, activated carbons (ACs) were produced from coal using potassium hydroxide as a chemical-activating agent. The preparation procedure …
Preparation of activated carbon from bituminous coal with …
Activated carbons were prepared from an Australian bituminous coal in this study. The preparation process consisted of phosphoric acid impregnation followed by carbonization in nitrogen at 400–600°C for 1–3 hours. The results reveal that the surface area and pore volume of the resulting carbons increase with the chemical ratio, H 3 PO …
One-step preparation of coal-based magnetic activated carbon …
The formation process of CMACs was illustrated in Fig. 1 from which the mineral-free coal sample was pre-loaded with the Fe-based additives and subsequently experienced a CO 2-activation process to yield CMACs.Ferric oxalate/Fe 2 (C 2 O 4) 3 (FCO), ferrocene/Fe(C 5 H 5) 2 (FCH), ferroferric oxide/Fe 3 O 4 (FO), reduced iron …
Preparation of activated carbon from babassu endocarpunder microwave
Babassu endocarp were used to prepare activated carbons by physical activation via microwave radiation for the first time. The pyrolysis temperature was 600°C and the derived biochar were activated in CO2atmosphereat 700, 750 and 800°C for 30 min. The material was characterized using scanning electron microscopy (SEM). The …
Microwave catalytic pyrolysis of biomass: a review focusing …
The principle of microwave absorbents in assisting biomass heating is revealed, and the impacts of the microwave absorbent type (related to microwave …
Modification of Activated Carbon by Means of Microwave …
Two kinds of typical activated carbons (coal based AC and coconut shell based AC) were modified in a flow of N2 gas has been carried out using a microwave device operating at 2450 MHz and different input power, instead of a conventional furnace. The samples were analyzed by means of low temperature N2 adsorption, elemental analysis and Boehm …
Review on Coal-Based Activated Carbon: …
In this paper, the relevant research on coal-based activated carbon in recent decades is reviewed, including raw material selection, preparation process and mechanism, modification methods, …
Preparation of carbon-based microwave absorbing …
DOI: 10.1016/j.matlet.2022.133155 Corpus ID: 252262583; Preparation of carbon-based microwave absorbing materials by hybrid activation pyrolysis of lignin and coal @article{Zhao2022PreparationOC, title={Preparation of carbon-based microwave absorbing materials by hybrid activation pyrolysis of lignin and coal}, author={Yan Zhao …
Preparation of activated carbon from Xinjiang region coal by microwave …
Coal-based activated carbons (CAC) were prepared from coal in Xinjiang China by microwave-assisted activation. The effects of preparation conditions on adsorption capabilities of CAC for methylene ...
Enhanced PAHs adsorption using iron-modified …
As an effective adsorbent, coal-based activated carbon (CAC) was modified with iron through microwave radiation to adsorb polycyclic aromatic hydrocarbons (PAHs) from aqueous solutions.
Green synthesis of porous bamboo-based activated carbon …
VOCs has serious impacts on the environment and humans due to its volatility. Activated carbon, as an adsorption material, has a rich pore structure and is widely used. This study uses fast-growing bamboo as a precursor and water vapor as a high-temperature activating agent to prepare environmentally friendly and green …
Coal Based Activated Carbon
USA CORPORATE OFFICE. 2250 S. Central Avenue. Compton, CA 90220. Tel: +1(310) 885-4555 info@activatedcarbon
Optimization of microwave preparation conditions for activated carbon
Microwave assisted KOH activation has been utilized for preparation of activated carbon from agricultural wastes, Albizia lebbeck seed pods. The surface area, micropores volume, and mesopores volume of this carbon (KAC) were 1824.88 m 2 /g, 0.645 cm 3 /g, and 0.137 cm 3 /g, respectively. The effects of process variables …
An activated carbon preparation device using traditional …
An activated carbon preparation device using traditional Chinese medicine waste residue as raw material. Author(s) Shuo Shao 1, Simiao Wang 2. ... Zhang B, Meng J, et al. Study on Waste Heat Utilization and Energy Saving and Emission Reduction of Coal-Based Activated Carbon Activation Furnace. Ningxia Engineering Technology. 2012; …
Preparation and Characterization of Activated Carbon from …
Bamboo-based activated carbon was prepared with a microwave-induced activation process using phosphoric acid as the activating agent. The effects of various factors such as microwave power ...
Microwave-assisted production of activated carbon in an …
A domestic microwave oven was adapted, in a safe way, to produce high surface area activated carbon, showing to be a promising process, because it involves …
Simultaneous catalytic hydrolysis of HCN, COS and CS2 …
In this work, a series of metal oxides modified microwave coal-based activated carbon (MCAC) catalysts were prepared for simultaneously catalytic hydrolysis of hydrogen cyanide (HCN), carbonyl ...
(PDF) Preparation and characterization of activated carbon from
Sunflower seed oil residue, a by-product of sunflower seed oil refining, was utilized as a feedstock for preparation of activated carbon (SSHAC) via microwave induced K(2)CO(3) chemical activation.
Preparation and characterization of activated carbon from coal …
In this study, activated carbons (ACs) were produced from coal using potassium hydroxide as a chemical-activating agent. The preparation procedure composed of KOH impregnation followed by activation at 700°C–900°C under the nitrogen atmosphere for the time duration of 1 h.
Adsorption behavior of phenanthrene onto coal-based activated carbon
Coal-based activated carbons (CAC) were prepared from coal in Xinjiang China by microwave-assisted activation. The effects of preparation conditions on adsorption capabilities of CAC for methylene ...
Preparation and performance of coal-based activated carbon …
The preparation of coal-based activated carbon mainly includes two steps. The first step is to carbonize the activated carbon raw material at a high temperature in …
Production of activated carbon derived from agricultural by …
Biomass of agricultural waste is getting increasing attention all over the world as it is a kind of renewable, abundantly available, low cost, and environmentally friendly resource. Preparation of activated carbon from agricultural waste via microwave-assisted chemical agent activation. The porosity, surface area, and functional and surface …
Coal Based Activated Carbon Preparation Application of …
Chemical additives on the preparation of activated carbon from coal preparation process has certain control effect. This paper takes Tangshan long flame coal as the research object, according to the different proportion of adding different amount of ZnCl2and KOH, studied the effect of chemical additives during carbonization of coal volatile coal …
One-step preparation of coal-based magnetic activated carbon …
Magnetic activated carbon was prepared by one-step physical activation method. • Pore structures and magnetic properties were influenced by Fe source and Fe content.. FeCl 3 and trace reduced iron in coal promoted the development of micro- and mesopores.. Activated carbons had saturation magnetizations of 0.55–14.26 emu g −1.. …
Simultaneous catalytic hydrolysis of HCN, COS and CS2 …
In this work, a series of metal oxides modified microwave coal-based activated carbon (MCAC) catalysts were prepared for simultaneously catalytic hydrolysis of hydrogen cyanide (HCN), carbonyl sulfide (COS) and carbon disulfide (CS 2).The influences of metal species, precursor, metal oxides amount and calcination temperature …
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